'maintain the forest' is correct and usable in written English.
You could use it in any context in which you are encouraging someone to take care of or preserve a forest. For example: "It is important to maintain the forest for future generations, so make sure to plant new trees whenever possible."
The Forest Service's program in the Tongass already operates at a deficit of about $30 million a year, meaning that the federal government pays that much more to build roads and maintain the forest than it takes in from timber companies, which grind most of the trees to a pulp that is sold for export.
We find that in the scenario we investigate here, repeated treatments necessary to maintain the forest at a low risk of high severity wildfire do not allow the forest to recover to its pretreatment C stock (Figure 4b).
Landowners who entered the program had to sign a commitment to maintain the forest area in a portion of their property, but were allowed to make changes to land use in other parts of their property.
Nonetheless, a credible option may be to plant trees within the local bioregion and maintain the forest on a permanent basis, thus locking up carbon produced by burning fossil fuels.
"This is just about the community's desire to maintain the forest feel we have". Harriet Harris, an assistant planner who worked on the tree ordinance revision, said any tree that is non-native and therefore unprotected can be removed without a permit, regardless of its age or size.
If no forest is lost over a specified time period the buffered amount can be retrieved, providing an additional incentive to maintain the forest.
While in some areas the guerrilla presence helped maintain the forests, in others the rebels promoted clear-cuts to make way for the planning of coca, the raw material used in cocaine, or illegal gold mining, both a source of income for the group.
That robbed the region of the abundant precipitation needed to maintain the forests.
In fact, a substantial amount of money had been set aside in a fund established by Dr. Ernest Stillman, a fund whose primary purpose was to support the expenses of maintaining the forest and the expenses of conducting scientific work within it; the fund amounted to about a million dollars at the time of Dr. Stillman's death in 1949.
Friends of Karura Forest, a community organization that protects and maintains the forest, says there is no need for alarm.
Lincoln Glover lives next door to the woods and has acquired a chain-saw license in order to get stuck in with the continual work of maintaining the forest.
